I will keep that one in my “library:
Onions and garlic both contain something similar to each other that works. I have found that as soon as I even suspect that I may have a cold coming on (the little ‘itch’ in the back of the throat), or know I’ve been exposed, I will start eating a few raw cloves of garlic a day. It always works so long as I get on it immediately and am consistent for at least 2 days, preferably 3. I’ll avoid the bug while the people around me turn into human Petri dishes.
That remedy sounds delicious but sunshine daily(or vitamin D supps in the winter in northern climes) is a surer preventative and cure.